- Jazz is an evolution, not necessarily a progression of a single style
- sometimes, there are dead ends
- often there are many branches and they descend from many sources
- Many Jazz styles run parallel, and is not uncommon for a single performer to play in many different styles:
- Miles Davis
- Some performers play the same style throughout their career, yet remain important and/or influential:
- Louis Armstrong
A survey of the music and history of Jazz.